Home / 20,354.60-28,085.94-11,858.12

Finding the Fourth Proportional to 20,354.60, 28,085.94 and 11,858.12

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Solution

The fourth proportional to 20,354.60, 28,085.94 and 11,858.12 is: 16,362.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,354.60 : 28,085.94 = 11,858.12 : x
  2. Step 2: Convert to fraction form
    20,354.60/28,085.94 = 11,858.12/x
  3. Step 3: Cross multiply
    20,354.60x = 28,085.94 × 11,858.12
  4. Step 4: Simplify right side
    20,354.60x = 333,046,446.83
  5. Step 5: Solve for x
    x = 333,046,446.83/20,354.60
  6. Step 6: Final answer
    x = 16,362.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.